Solutions Search - LTC4121/LTC4121-4.2 - 40V 400mA Synchronous Step-Down Battery Charger

LTC4121 Temperature Compensation SLA Charging with LTC4121

Jan 9th 2015
Consider the design of a sealed lead acid charger with temperature compensation of the float voltage. Sealed Lead Acid batteries require the float voltage be decreased as cell temperature rises. With the LTC4121 this is achieved using an NTC thermistor in the feedback pin divider as shown in the figure above. Using the circuit ...

LTC4121 Solar Panel Charging 4.2V Li-Ion Battery at 400mA

Jan 9th 2015
The LTC®4121 is a 400mA constant-current/constantvoltage (CC/CV) synchronous step-down battery charger. In addition to CC/CV operation, the LTC4121 regulates its input voltage to a programmable percentage of the input open-circuit voltage. This technique enables maximum power operation with high impedance input sources ...